When the appearance of stainless steel wire shows brown rust spots, people are surprised, because they think that stainless steel wire does not rust, and rust is not stainless steel. This is actually a misunderstanding, which is a wrong view of the lack of understanding of stainless steel. Stainless steel has the ability to resist atmospheric oxidation, that is, rust resistance, and also has the ability to decay in media containing acid, alkali and salt, that is, corrosion resistance. However, the size of its anti-corrosion ability changes with its own chemical composition, interaction form, application premise and medium example. For example, 304 steel has relative anti-corrosion ability in a dry and clean atmosphere, but it will soon rust in the sea fog containing a small amount of salt when it is moved to the coastal area. Therefore, it is not any kind of stainless steel wire, It is resistant to decay and rust under any circumstances. The following is an introduction to the corrosion environment or situation of stainless steel wire:
In corrosive environment, the damage caused by chemical or electrochemical interaction between metal and surrounding medium is called corrosion. In corrosive environment, when 201 stainless steel wire is not selected properly, corrosion will also occur.
There are many ways to classify corrosion:
1.201 stainless steel wire can be divided into chemical corrosion and electrochemical corrosion according to the nature of action.
2.201 stainless steel wire can be divided into general corrosion according to the form of corrosion. General corrosion refers to the corrosion distributed on the whole stainless steel surface. The so-called local corrosion, pitting corrosion, crevice corrosion, stress corrosion, corrosion fatigue, selective corrosion, scouring corrosion, etc.
3.201 stainless steel wire can be divided into industrial water corrosion, soil corrosion, acid, alkali and salt corrosion, seawater corrosion, high temperature corrosion (including liquid metal, molten salt, gas corrosion), etc.
Therefore, when using 201 stainless steel wire, we should pay attention to avoid corrosion, clean and avoid placing the stainless steel wire in the acid-base environment for a long time.
